Is it possible for a site that used to rank high in Google to be placed in the sandbox again? Thanks.
I don't speak from experience (I have never had a site come out of the sandbox period, despite quality or varying link building) but from what others have said and what I've read, absolutely. Older sites can be thrown in to the sandbox. Pete
If you do some major changes, like changing whole site structure, fast link building or something else, yes you could be sandboxed again. Main rule when you are going to change such things is to make it slow and naturally.